There were several that were truly corrupt; the allegation that Obama's administration was corrupt is "fake," fabricated by his political enemies within the GOP, who envied him and hated the fact that a Black man was in the WH. Surely Nixon's was really corrupt and dishonest; GeeDuhbya's, too. Reagan was horrendous; the poor man was suffering Alzeimer's while in office and had to take forced naps by mid-day to recover some of his faculties, wore "hearing aids" that were used by the Secret Service to transmit to him what he had to say and answer when dealing with the press... he was simply unfit and too damned ignorant to realize it (just like tRump, deemed the worst resident of the WH in our entire history; he's mental faculties and his competence are now an issue Congress will have to deal with... SOON). Harding played poker while his administration plundered the coffers. Hoover... the old bigot was really bad, too, catering to his rich cronies and ignoring the problems facing the nation. Grant's administration was horrible; his administration took bribes IN the WH while Grant was drunk as a skunk! Buchanan's administration (and himself) was an abomination and a closeted homosexual!

That honor belongs to the Reagan Administration. His administration helped promote gang warafare (i.e., Bloods and Crips), Crack and the Displacement of Poor Blacks out of their neighborhoods (for the beginning of Gentrification)....all so he could win the battle for Drugs in Central American, re: the Contras.

Not even close. Recently we have the Bush 2 years, when companies like Halliburton and Blackwater exchanged campaign contributions for military contracts the army could have performed cheaper, although they are hard to put a number on because there haven't been enough details revealed to estimate an accurate total. For those time has been able to expose there are some much better nominees. Warren Gamaliel Harding, for example, was personally corrupt and brought his cronies into Cabinet with him so they could get theirs as well. Secretary of the Interior Harry Daugherty was the worst. He was convicted of selling the Teapot Dome National Oil Reserve in exchange for bribes that John D. Rockefeller was acquitted of paying. Harding would most certainly have been impeached had he not died in what is believed to have been a suicide. These are both Republicans, but the Democrats offer us James Buchanan, who allowed his southern Cabinet members to transfer arms and manufacturing equipment to their home states in preparation for Secession, then did nothing when they did secede because he needed their support at the nominating convention to keep his rival Stephen Douglas from gaining control of the party. We can offer Hiram Ulysses Grant's administration as a reasonably honest President surrounded by wolves. Barack Obama was actually fairly ethical and fiscally responsible, although every administration of every party has its problem people. I think I have to go with Buchanan as the worst, because he knowingly violated his Inaugural Oath and ignored literal treason for personal gain.